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Oklahoma Agricultural Experiment Station, Bulletin no. 345, February 1950: Cotton growing in eastern Oklahoma; A comparison of present methods and recommended practices
(Oklahoma Agricultural Experiment Station, 1950-02)
Oklahoma Agricultural Experiment Station, Bulletin no. 350, June 1950: Cotton growing in southwestern Oklahoma; A comparison of present methods and recommended practices
(Oklahoma Agricultural Experiment Station, 1950-06)
Oklahoma Agricultural Experiment Station, Bulletin no. 358, September 1950: Cotton growing in southeastern Oklahoma; A comparison of present methods and recommended practices
(Oklahoma Agricultural Experiment Station, 1950-09)